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George H., ASE Certified Technician

Category: Honda

Satisfied Customers: 17118

Experience: ASE Master Tech 15+ years

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2000 honda accord: o2 sensor..hood..check engine light..the egr, cat

Customer Question

i have a 2000 honda accord, yesterday i changed the o2 sensor under the hood in an effort to get my check engine light to turn off so as to get thru inspection, well no luck the light went off for about 10 mins and came back on, the code from the inspection report tells me that its my primary o2 sensor for the heating system, is the "primary" sensor the one under theh hood or the one in the side of the cat? also i had several of the emmissions components come back "not ready" such as the egr, cat, and couple of others, is that from pullin the check engine fuse to try and reset the light and not giving the car enough time to rebot before the inspection?

The primary O2 sensor is the one you can access from the top of the engine

You will have to perform two "drive cycles" to have all the I/M monitors set as ready. If a code sets before the monitors are ready they will stop running until reset and you start the process over again. The monitors will be not ready once you pull the ECM fuse and the drive cycle will have to be compleded again

*Some brands of fuel and/or fuel additive packages may create deposits at the fuel injector tips. This build-up may cause slight air/fuel deviations between each cylinder. Build-up of these deposits, when coupled with very specific driving conditions, may cause the MIL to come on and the PCM to store DTC P0133.*

<p>the code was p1167 primary heated o2 sensor heater system malfunction, could that have been caused by tryin to reset the system? or is that the o2 sensor itself giving me that code? prior to replacin the o2 sensor i did replace i was getting a p1166 code also but that one cleared after replacing the sensor. i wonder if the sensor in the cat is giving me the p1167 code. the repair manual dosent distinguish the two sensors with diffrent codes and thats why im having trouble figuring out which sensor is giving the code. once i complete the drive cycles the "not ready" errors should go away correct?</p>

Here is a copy of the drive cycle for your vehicle once we determine what sensor you have the issue with

Completing the Drive Cycle successfully one (1) time should reset most drive cycle monitors to a "Ready" status. However, there are "two trip" monitors, which require that the drive cycle be successfully completed two (2) times, to achieve a "Ready" status. Furthermore, systems which use averaging, may require the drive cycle to be completed more than 2 times.

Verify the status of the readiness monitors with the appropriate function of your scan tool.

NOTE: Certain vehicles have known OBD-II Readiness issues. Please be sure to review TSB's for special circumstances and or exceptions to readiness monitor resetting procedures.

Before Beginning the Drive CycleCheck the status of the Readiness Monitors, check for DTC's, correct faults, clear DTC's before beginning the Drive Cycle.

Begin Drive CycleThe vehicle should be driven approximately 7.5 miles within a period of approx. 23 minutes (1372 seconds) from a cold start. However, due to manufacture variations, it is necessary to perform only as much of the Drive Cycle as is necessary to reset the required monitors to a "Ready" status. Operate the throttle smoothly to obtain best results. Do not shut the engine off during the drive cycle.

CAUTION: Obey all traffic laws and drive in a safe manner!

NOTE: Extreme driving conditioning such as very high/low temperatures, rough roads and high altitudes may prevent some monitors from attaining a "Ready" status.

NOTE: Remember, clearing DTC's or interrupting power to the ECM after the readiness monitors have been reset to "Ready" will require that the Drive Cycle be repeated.

Completing the Drive Cycle successfully one (1) time should reset most drive cycle monitors to a "Ready" status. However, there are "two trip" monitors, which require that the drive cycle be successfully completed two (2) times, to achieve a "Ready" status. Furthermore, systems which use averaging, may require the drive cycle to be completed more than 2 times. It is necessary to perform only as much of the Drive Cycle as is necessary to reset the required monitors to a "Ready" status.

End Drive Cycle

Sorry but I have been busy today and have not had time to get this to you

Usually the heater code is the sensor itself, if you used a Honda sensor and not a "universal" sensor the code will be cleared from current once the monitor runs successfully

If you have a voltmeter to check the heater voltage supply we can move forward with this

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